Jen and Susan walked into the school, starting down the hall Jen was really self conscious about her state of dress.
"Susan, do you think you have any extra clothes in you locker I can borrow?" Jen asked
"Nnnooo, but..." Susan paused, "I think they have a box of clothes in the gym. Why don't you look there?"
Jen remembered the box, she never thought she would have to go through it, but she needed something more than this skimpy outfit she had on now. She went to the gym and found the box, alone with just her thoughts she rummaged through the box, but these weren't her size at all, they were either too small or too big. She found a pair of shoes in her size which was good, but the sweats were a men's, they reached her ankles but were really baggy, and the top was a guys too, a 2 XL. She found a clean bra, two cup sizes larger than her, and what she thought was a matching pair of shorts, she didn't want her but touching the sweats. Jen sighed, and slipped on the underwear, looking down at herself she felt uncomfortable, she then started feeling weird.
Jen watched with worry as she noticed something off about her breasts, suddenly she realized they were getting bigger, they swelled and filled her new cups, straining her bra, but her bottoms didn't grow, instead she felt something else. Jen sat down and watched in horror as a new and alien shape started to grow on her crotch, she lifted the shorts and screamed in the empty gym.
"I HAVE A COCK????" Jen cried as her new member grew larger by the second, she had held one before but this was larger than anything she had ever seen, she watched as it strained her shorts to near breaking point, she pulled it out. Her new manhood was massive, it filled her hands, and it wasn't even stiff, her new cock was at least as thick as a baseball bat and at least fifteen inches flaccid, her new balls were at least the size of baseballs, she reached under and found she was still partly female. Jen gulped, she couldn't believe what was happening but she had the urge to put on the rest of the clothing. Jen fought to resist but she found herself moving without thinking, she put on the sweats, and felt a sudden rush of growth, her legs swelled, not with fat but muscle, Jen stared in disbelief as her thighs and calves swelled to sizes guys dreamed of, her legs now filled her new pants, they were tighter than yoga pants, and she could see every crevice of the surface of her now massive and muscular legs. Jen started crying as she felt the same force push her to put on the shirt.
As soon as Jen's head went through the hole her body stared growing again, Jen screamed.
"NO! STOP! STOP!" Jen yelled as her new muscle expanded at a rapid pace, her torso quickly filling the shirt and expanding even further, stretching the shirt to it's limits, her new bust pressed forward and outward, the bra started to give, finally tearing at the center, her breasts started to expand again, her new muscular body strained against the shirt, a tear began to form at the collar. Jen stood there and cried watching her bust expand even further, massive on a regular woman they looked obscene on her new massive and strong body, when they finally stopped the tshirt looked more like a tight bra, the valley of cleavage she now sported all she could see in front of her, they had to be the size of small beach balls. She stood there and then sprinted to the girls locker room, there she looked at her new monstrous self in the mirror, a muscle fetishists dream. Against her feelings her new cock sprung to life, it hardened and filled what little room her right pant leg had finally tearing the pants open, her massive shaft at least three feet long, standing at full attention and pressed against the mirror.
Jen sobbed, "Why me? Why this?"
Just then someone entered the locker room. It was...